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Surface-Plasmon-Polariton (SPP)-Like Acoustic Surface Waves on Elastic Metamaterials (1408.2186v1)
Published 10 Aug 2014 in cond-mat.mtrl-sci and physics.class-ph
Abstract: We investigate the dispersion properties of the acoustic surface waves on surface of elastic metamaterials. With an analytical approach, we show that unconventional acoustic surface waves, with dispersion behaviors very similar to the electromagnetic surface plasmon polaritons (SPPs) on metal surfaces, can exist on the elastic metamaterials around the frequency at which the elastic Lam\'e's constants satisfy lambda+mu=0. Two typical elastic metamaterials are exemplified to demonstrate such peculiar acoustic surface waves.
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